Where did this snow come from today!?

Where did all this snow come from today?!

cold_front_20130102It seems like an arctic cold front crossing Lake Ontario this afternoon captured a lake effect snow band (which had a connection to Georgian Bay) that was over the east end of the lake and caused this band to swing southwestward along the south-shore of the lake with snow totals ranging from 3-6 inches of fluff! This totally caught us off guard!